The Plaza del Rey is the most noble part of the old Barcelona. At the end, there is the exterior part of Palau Reial Major (Royal Mayor Palace) in which you will find the Salón del Tinell.
At the right hand you have the Capilla Palatina, or Capilla de Sant Àgata (Capilla de Santa Agueda) and at the left the palace of Lloctinent which stored the Archive of the Crown of Aragon (actually located in Almogàvers).
At the right hand at the corner with the street Veguer you find Casa Clariana-Padellàs, which is the home of the Historic Museum of the city of Barcelona.
Nothing scheduled right now.